Another approach, for fun, using regular expressions: regex=’prefix – (.*) – suffix.txt’ for f in *.txt; do [[ $f =~ $regex ]] && mv “$f” “${BASH_REMATCH[1]}.txt” done Actually, using the simple pattern ‘*.txt’ here has two problems: It’s too broad; you may need to apply the regex to a lot of non-matching files. If there … Read more
For Java 1.7+, use java.nio.file.Files.move(Path source, Path target, CopyOption… options) with CopyOptions “REPLACE_EXISTING” and “ATOMIC_MOVE”. See API documentation for more information. For example: Files.move(src, dst, StandardCopyOption.ATOMIC_MOVE);
Starting Git 2.0.1 (June 25th, 2014), a git mv will just work on a case-insensitive OS. See commit baa37bf by David Turner (dturner-tw). mv: allow renaming to fix case on case-insensitive filesystems “git mv hello.txt Hello.txt” on a case-insensitive filesystem always triggers “destination already exists” error, because these two names refer to the same path … Read more
In your code: Shouldn’t it be : File from = new File(directory, currentFileName); instead of File from = new File(directory, “currentFileName”); For safety, Use the File.renameTo() . But check for directory existence before renaming it! File dir = Environment.getExternalStorageDirectory(); if(dir.exists()){ File from = new File(dir,”from.mp4″); File to = new File(dir,”to.mp4″); if(from.exists()) from.renameTo(to); } Refer: http://developer.android.com/reference/java/io/File.html#renameTo%28java.io.File%29
Yes and no. rename() is atomic assuming the OS does not crash. It cannot be split by any other filesystem op. If the system crashes you might see a ln() operation instead. Also note, when operating on a network filesystem, you might get ENOENT when the operation succeeded successfully. Local filesystem can’t do that to … Read more
Use uuid. To tie that into your model see Django documentation for FileField upload_to. For example in your models.py define the following function: import uuid import os def get_file_path(instance, filename): ext = filename.split(‘.’)[-1] filename = “%s.%s” % (uuid.uuid4(), ext) return os.path.join(‘uploads/logos’, filename) Then, when defining your FileField/ImageField, specify get_file_path as the upload_to value. file = … Read more
In your specific case you can use the following bash command (bash is the default shell on macOS): for f in *.png; do echo mv “$f” “${f/_*_/_}”; done Note: If there’s a chance that your filenames start with -, place — before them[1]: mv — “$f” “${f/_*_/_}” Note: echo is prepended to mv so as … Read more
java.lang.IllegalArgumentException: Movement of content://media/external/file/116 which isn’t part of well-defined collection not allowed So it is for Android Q not allowed if you use the collection; Uri extUri = MediaStore.Files.getContentUri(MediaStore.VOLUME_EXTERNAL); But is is allowed for a ‘well-defined collection’ like: Uri extUri = MediaStore.Images.Media.getContentUri(MediaStore.VOLUME_EXTERNAL); // Use “Pictures/MyFolder” for RELATIVE_PATH I leave it to you to find other … Read more
import os import glob files = glob.glob(‘year*.jpg’) for file in files: os.rename(file, ‘year_{}’.format(file.split(‘_’)[1])) The one line can be broken to: for file in files: parts = file.split(‘_’) #[abc, 2000.jpg] new_name=”year_{}”.format(parts[1]) #year_2000.jpg os.rename(file, new_name)
I can only speak for Debian. The two programs are called /usr/bin/rename.ul from the util-linux package (hence the .ul suffix) /usr/bin/prename from the perl package The actual rename command works via the /etc/alternatives mechanism, whereby /usr/bin/rename is a symlink to /etc/alternatives/rename /etc/alternatives/rename is a symlink to /usr/bin/prename The same problem has been bugging me on … Read more